Why can't father and son compromise?

In Chinua Achebe's short story "Marriage Is a Private Affair," Nnaemeka rejects the traditional Ibo marriage custom by choosing his own bride and proposing to Nene without his parents' approval. In Ibo culture, it is tradition that a man's father choose his son's bride and handle negotiations regarding the bride price. Nnaemeka is aware that his father will be upset that he purposely rejected Ibo tradition by proposing to Nene because his father is a strict traditionalist. After Nnaemeka tell his father that he will not propose to Ugoye Nweke and that he is engaged to Nene, his father shuns and disowns him.
While Nnaemeka makes several attempts to rekindle his relationship with his father, his father refuses to respect Nnaemeka's decision and accept the fact that he has rejected the traditional Ibo custom. Overall, Nnaemeka and his father cannot compromise because Nnaemeka genuinely loves Nene and plans on marrying her regardless of his father's thoughts or Ibo tradition. Likewise, Nnaemeka's father refuses to accept his son's decision and cannot respect the fact that his son has rejected the traditional marriage custom.